
\usepackage{threeparttable}

\begin{table}
\caption{Treatment effects on support for non-citizen local voting rights in Pooled sample}
\begin{center}
\begin{threeparttable}
\begin{tabular}{l c c c c c c c c}
\hline
 & \multicolumn{1}{c}{vote US} & \multicolumn{1}{c}{vote own} & \multicolumn{1}{c}{gov dec} & \multicolumn{1}{c}{more info} & \multicolumn{1}{c}{vote US} & \multicolumn{1}{c}{vote own} & \multicolumn{1}{c}{gov dec} & \multicolumn{1}{c}{more info} \\
\cline{2-2} \cline{3-3} \cline{4-4} \cline{5-5} \cline{6-6} \cline{7-7} \cline{8-8} \cline{9-9}
 & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) \\
\hline
control            & $2.710^{*}$         & $2.765^{*}$         & $2.753^{*}$         & $0.271^{*}$        & $1.653^{*}$         & $1.688^{*}$         & $1.835^{*}$         & $0.109^{*}$         \\
                   & $ [ 2.649;  2.771]$ & $ [ 2.703;  2.826]$ & $ [ 2.691;  2.814]$ & $ [ 0.254; 0.289]$ & $ [ 1.472;  1.835]$ & $ [ 1.507;  1.869]$ & $ [ 1.650;  2.019]$ & $ [ 0.049;  0.169]$ \\
co-partisan        & $0.121^{*}$         & $0.109^{*}$         & $0.102^{*}$         & $-0.012$           & $0.133^{*}$         & $0.119^{*}$         & $0.113^{*}$         & $-0.011$            \\
                   & $ [ 0.035;  0.207]$ & $ [ 0.023;  0.195]$ & $ [ 0.015;  0.189]$ & $ [-0.037; 0.013]$ & $ [ 0.064;  0.203]$ & $ [ 0.050;  0.189]$ & $ [ 0.041;  0.184]$ & $ [-0.035;  0.013]$ \\
counter-partisan   & $-0.359^{*}$        & $-0.380^{*}$        & $-0.370^{*}$        & $-0.023$           & $-0.349^{*}$        & $-0.371^{*}$        & $-0.362^{*}$        & $-0.022$            \\
                   & $ [-0.442; -0.275]$ & $ [-0.463; -0.296]$ & $ [-0.455; -0.286]$ & $ [-0.048; 0.001]$ & $ [-0.417; -0.281]$ & $ [-0.440; -0.303]$ & $ [-0.432; -0.291]$ & $ [-0.046;  0.002]$ \\
college            &                     &                     &                     &                    & $-0.063^{*}$        & $-0.045$            & $-0.048$            & $-0.046^{*}$        \\
                   &                     &                     &                     &                    & $ [-0.123; -0.004]$ & $ [-0.105;  0.015]$ & $ [-0.110;  0.013]$ & $ [-0.067; -0.025]$ \\
male               &                     &                     &                     &                    & $-0.107^{*}$        & $-0.123^{*}$        & $-0.145^{*}$        & $-0.038^{*}$        \\
                   &                     &                     &                     &                    & $ [-0.163; -0.050]$ & $ [-0.180; -0.066]$ & $ [-0.203; -0.086]$ & $ [-0.057; -0.018]$ \\
white              &                     &                     &                     &                    & $-0.129^{*}$        & $-0.127^{*}$        & $-0.144^{*}$        & $-0.102^{*}$        \\
                   &                     &                     &                     &                    & $ [-0.212; -0.047]$ & $ [-0.208; -0.045]$ & $ [-0.227; -0.060]$ & $ [-0.131; -0.073]$ \\
latino             &                     &                     &                     &                    & $0.110^{*}$         & $0.100$             & $0.080$             & $0.015$             \\
                   &                     &                     &                     &                    & $ [ 0.009;  0.212]$ & $ [-0.003;  0.203]$ & $ [-0.022;  0.183]$ & $ [-0.021;  0.050]$ \\
republican         &                     &                     &                     &                    & $-0.793^{*}$        & $-0.765^{*}$        & $-0.752^{*}$        & $-0.018$            \\
                   &                     &                     &                     &                    & $ [-0.862; -0.724]$ & $ [-0.834; -0.695]$ & $ [-0.823; -0.682]$ & $ [-0.041;  0.004]$ \\
strong partisan    &                     &                     &                     &                    & $0.170^{*}$         & $0.151^{*}$         & $0.161^{*}$         & $-0.001$            \\
                   &                     &                     &                     &                    & $ [ 0.111;  0.230]$ & $ [ 0.091;  0.211]$ & $ [ 0.100;  0.222]$ & $ [-0.021;  0.020]$ \\
employed           &                     &                     &                     &                    & $0.141^{*}$         & $0.112^{*}$         & $0.139^{*}$         & $0.044^{*}$         \\
                   &                     &                     &                     &                    & $ [ 0.083;  0.198]$ & $ [ 0.054;  0.169]$ & $ [ 0.080;  0.198]$ & $ [ 0.024;  0.063]$ \\
married/partner    &                     &                     &                     &                    & $-0.103^{*}$        & $-0.104^{*}$        & $-0.118^{*}$        & $-0.025^{*}$        \\
                   &                     &                     &                     &                    & $ [-0.162; -0.044]$ & $ [-0.164; -0.044]$ & $ [-0.179; -0.056]$ & $ [-0.045; -0.004]$ \\
attitudes migrants &                     &                     &                     &                    & $0.437^{*}$         & $0.452^{*}$         & $0.427^{*}$         & $0.033^{*}$         \\
                   &                     &                     &                     &                    & $ [ 0.413;  0.461]$ & $ [ 0.428;  0.476]$ & $ [ 0.402;  0.452]$ & $ [ 0.026;  0.041]$ \\
native born        &                     &                     &                     &                    & $0.080$             & $0.079$             & $0.040$             & $0.017$             \\
                   &                     &                     &                     &                    & $ [-0.007;  0.168]$ & $ [-0.010;  0.168]$ & $ [-0.051;  0.130]$ & $ [-0.012;  0.046]$ \\
interest politics  &                     &                     &                     &                    & $0.021$             & $0.018$             & $0.008$             & $0.045^{*}$         \\
                   &                     &                     &                     &                    & $ [-0.007;  0.050]$ & $ [-0.011;  0.047]$ & $ [-0.021;  0.038]$ & $ [ 0.036;  0.055]$ \\
\hline
cov                & no                  & no                  & no                  & no                 & yes                 & yes                 & yes                 & yes                 \\
Adj. R$^2$         & $0.017$             & $0.018$             & $0.017$             & $0.000$            & $0.339$             & $0.340$             & $0.312$             & $0.045$             \\
Num. obs.          & $7704$              & $7703$              & $7704$              & $7425$             & $7704$              & $7703$              & $7704$              & $7425$              \\
\hline
\end{tabular}
\begin{tablenotes}[flushleft]
\scriptsize{\item Presents estimates of average treatment effects and heteroskedasticity-consistent 95% CIs without and with covariate adjustment for the Pooled sample (pooling together Study 1 and Study 2). The sample includes Democratic, Republican and Independent (for Study 1 only) registered voters who answered covariate and outcome questions. 
 $^*$ Null hypothesis value outside the confidence interval.}
\end{tablenotes}
\end{threeparttable}
\label{table:ols_pooled}
\end{center}
\end{table}
